Apparatus for measuring the flow of fluids



C. L. cN-UL.

APPARATUS FOR MEASURING THEy FLOW OF FLUIDS Fiec 0G11. 6, 1919 QLIM@ 7M@ m CEB-LS L. VJEIL, OF PORT HUB-ON, MICHIGAN; ELLA S. WEL SPECIAL ADMINSTR- 'ERIK 0F CHARLES I.. WEL, DECEASED.

APABATUS FOR MEASURING THE FLOW Oi? ELUES.

Application iied October 6, 15H9.

To all ff/icm muy concern.:

Be it known tl at l (firearms L. livelli. a citizen of the llnited States ot America, residing at Port Huron. in the, county ot' St. t`ia'ir and State ot Michigan7 have invented certain new and use ful improvements in Apparatus 'for lileasuringr the Flow of Fluids. ot' which the following, is a specilication. reference beinghad therein to the accompanying drawings. I

The invention relates to the measurement ot' the llow oi tiuids and it is the object' of the invention to obtain `greater accuracy; also tovprovide means ot' checking' other tiow meters or indicators.

iin the present state ol the art various con structions ol devices have been used for measurinpr the tlow of fluids, but in practice ithas been found that mostl of these are very ii'iaccurate. 1With my improved construction a small part of the fluid is diverted while inaiitraining"r the same conditions as to frictional resistance or back pressure. This diverted portion is then weighed. or otherwise accurately measured, and as the ratio between the amount so diverted and the remainder ot the fluidv is known the total flow is accurately measured.

TWhile my apparatus is applicable to the measurement of various fluids, l shallspecilically describe its appli ation to l the measurement ot the '.tlow of steam.

in the. d"awin, 1s:

Figure l is a diagrammatic sectional plan view of the apparatus;

Figure a cross-section thereof.

fr is the conduit through which the steam is flowing'. and B is my improved meter which is coupled in between sections of the conduit This meter comprises a casing which is ot' a cylindrical forni enlarged in diameter at the center and taperin} r towards opposite ends, said ends being equal in area to the crosssection ot the conduit. C is a dish'` or partition extending centrally across the casing: to divide' the same into chambers B and B2, being; preferably clamped between sections of the casing provided with iianges D. The. disk or partition C is formed with a series of like apertures E extending therethrough and of a determined number.- Une of these apertures E has connected therewith in the chamber B2 or on the side towards which the steam is flowing a conduit F, preferably gradually enlarging to Serial No. 328,857.

avoid trictioinil resistance. yThis conduit. l" passes out through the side ot the casin and is connected with a casing ti and ta casing' is formed with two separate c` ani-- bers or compartments therein la. and it', separated from each other b v a tlexibie dial'ihragrm l. The diaphragm is preferably arranged between perforated rigid plates and J which limit the amount ot deflection to- Within the elastic limit of the material. The diaphragm l controls a valve K t'or variably restricting' an outlet from the chamber H, said outlet beine" connected by a conduit L with a. condenser lil. There is also a connection between the chamber B2 in the casing' C and the chamber H in the casing' (i formed by the conduit l. O and 0 are drain conduits connected to the chambers H and H for removing condensation therefrom and O2 and O3 are suitable valves in the respective conduits for preventing the pressures in chambers H and H tron; being equalized through the drainconduits.

With the construction as described when steam is flowing` through the conduit A, it will be obliged to pass through the apertures E and E in the diaphragm lGand by reason ot' the resistance ot' the diaphragm there will be. a. slight drop in pressure in the chamber B2 in comparison with the pressure in the chamber B. vrl`he pressugre in the chamber Bf is communicated to the'chamber ll' in the casing (i and consequently will be the same in the. latter casing. On the other hand. the pressure in the chamber H o'l the casing G will be determined by the ree-triction ot' the discharge from said chamber through the conduit L. inasmuch, however, as the diaphragm I is subjected on'its opposite sides to the pressures in the chambers H and H and as said diaphragm is flexible. it is evident that any ditlerence in pressure in the chambers will cause a deliection ot' the diaph 'agin This in turn will adjust the valve K so as to vary the restriction ot' the outlet with the result that the pressures inthe chambers H and H will be substantially equalized. 1When this condition of substantially equal pressures is established in the chambers H and H', the resistance of thedischarge of the steam through each ot the apertures E will be practically equal to the resistance of the discharge through the aperture l ,and consequently the flow through said apertures will be practically equal. As-

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gea-25g anim* w umg :maintaining pressure against 1'; measuring the second condui.

3. n apparatus .a the Said conduit hzwiig a puyaly of ap themu0ugh means fm.' diveringg me discharged ighrmfig a *7m colect and meas kring; h@ condensd fum. @u om the tot@ How, 1&5

which the fluid flows, a, partition ncossx said.

here'houggh a ce. gammadi.

nf mid the? relive, ineens for 'exposing the opposite side of saidV Inovabie member to a pressure equal to the ,pressure ,in the conduit behind said.

' the diverted timid to coiiect and measire the same, ineens for varia'foiy restricting tno How of said diverted.- iiuid to said condenser to regulate the hack pressure ereon, and controiiingmeans `for the tariehiy restricting means operable Toy dierentiei pressure hetween the head pressure' oi? the diverted stream and the back pressure the conduit behind the partition to maintain eqnoi heck pressure upon -said diverted etreem Iind against the jiow oit timid through the other apertures. Y

8. An apparatus for measuring the fiow of iuids comprising' a conduit through which the Huid Hows, a partition across said conduit having a determined number of like apertures therethrough, e second conduit connected to one or seid eperturesto 'divert the iiuid passing' therethrough from the main stream, a casingI having a fiexihiediaphragm therein, means for connecting said second conduit to said vcosimo; upon one side of said diaphragm, a pipe connected to said casing upon the other side of said diaphragm and communicating; with said first mentioned conduit on the down stream side of said partition, an outlet ior said casing, and a valve `for said 'outlet controlled hy said diaphrarvrn to maintain equal back pressures upon tno mainstream and the diverted stream.

9. An epparatus. for measuring the dow of duide comprising a Aii'iid conduit having an enlarged central portion, a partition eir-1 endingacross the enlarged portion oi said conduit and provided with a plurality ot aertures, a second conduit connected to one o1 seid apertures to divert the timid pessima* therethrough from the main stream, sai conduit havingthe inlet portion thereof extending; in substantially the same direction as the'direction of -iow through said first conduit, moons for maintaining; the same condition of hack pressure against the divetted stream as against the main stream, and meanstor measuring` vthe tiuid passing through seid 'second conduit. Y n l, i0. An apperetus for measuring the dow 'oi duide comprising o) iiuid conduit having a centrai portionoii greater cross sectional `aree than the end` portions, a partition ex tending across said conduit in said ntral. portion and having; a pluraiity oi apertures permitting the iiuid to pass therethrough. a second conduitxoonnectedto one of said apertures to divert the iiuid passing therethroughrom the mainstream, said conduit f havin the inlet portion thereof extending in su stantiaily the same direction as the direction of How through saidiirst conduit,

means for maintaining the same condition of bach pressure against the diverted stream as against the main stream, and means for measuring the Huid. passing through said second conduit. l

in testimony whereof i aiiix my signature.

CHARLES L. 

